api188View technical datasheet of API 188. It is a non-ionic emulsion of a hh-melt polyethylene resin. It provides scuff, scratch and mar resistance.Above pipe sizes are available in API 5L Gr. B, X42, X46, X52, X56, X60, X65, X70, X80, X100 and X120 material grade. API 5L Pipe Schedule Chart